Chess Board
[ECO code D37] Do not scroll the screen..! Move Move Move Move Here Move Here
QUEEN'S GAMBIT
(towards) Orthodox Defence (alt. route)

Black's KB to a closed K2(e7) enabled a rapid ..0-0.
White develops his QB to a supported KKt5(g5), rejecting a Harrwitz Attack to return to "orthodox" Pillsbury Development half-pinning Black's KKt. Black in response tends to castle. W-Alt.
    White  Black	White  Black
 1. P-Q4   P-Q4	     5.	B-Kt5
 2. P-QB4  P-K3
 3. Kt-QB3 Kt-KB3
 4. Kt-B3  B-K2	    Main 5W,4W route

BLACK to Move or Undo or Jump or Clear
 
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When castling always touch the king first
Under FIDE laws of chess, if a player deliberately touches a rook and then his king, he is not allowed to castle on that side on that move but must still move the rook if legally possible.

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